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Contents of /src/general-info/release-20c.txt

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Sat Apr 2 19:27:41 2011 UTC (3 years ago) by rtoy
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1 rtoy 1.1 ========================== C M U C L 20 c =============================
3     [--- WORK IN PROGRESS ---]
5     The CMUCL project is pleased to announce the release of CMUCL 20c.
6     This is a major release which contains numerous enhancements and
7     bug fixes from the 20b release.
9     CMUCL is a free, high performance implementation of the Common Lisp
10     programming language which runs on most major Unix platforms. It
11     mainly conforms to the ANSI Common Lisp standard. CMUCL provides a
12     sophisticated native code compiler; a powerful foreign function
13     interface; an implementation of CLOS, the Common Lisp Object System,
14     which includes multi-methods and a meta-object protocol; a source-level
15     debugger and code profiler; and an Emacs-like editor implemented in
16     Common Lisp. CMUCL is maintained by a team of volunteers collaborating
17     over the Internet, and is mostly in the public domain.
19     New in this release:
21     * Known issues:
23 rtoy 1.4 * Feature enhancements
24 rtoy 1.2 - Update to Unicode 5.2.0.
25 rtoy 1.3 - Add support for character name completion. This can be used by
26     Slime to do character name completion.
27 rtoy 1.15 - Initial support for Solaris/x86. CMUCL will run on Solaris/x86
28 rtoy 1.19 with all features available, except only Unicode is supported.
29 rtoy 1.1
30 rtoy 1.4 * Changes
31 rtoy 1.21 - ASDF2 updated to version 2.014.1.
32 rtoy 1.4 - COMPILE-FILE now accepts a :DECODING-ERROR argument that
33     indicates how to handle decoding errors when reading the file.
34     It has the same meaning and effect as the :DECODING-ERROR
35     argument to OPEN. This defaults to T here so that decoding
36     errors are signaled on invalid sequences instead of silently
37     replacing the bad sequence with some kind of replacement
38     character.
39 rtoy 1.5 - In 19f through 20b, READ-SEQUENCE could read mostly arbitrary
40     data from a stream in to the given sequence. In this release,
41     READ-SEQUENCE cannot do that unless the stream is a
42     binary-text-stream. This is an incompatible change from
43     previous releases.
44 rtoy 1.6 - RUN-PROGRAM accepts :EXTERNAL-FORMAT parameter to specify the
45     external format to be used for any streams that RUN-PROGRAM
46     needs to create.
47 rtoy 1.7 - Add src/tools/build-all.sh to automate building all of the
48     variants (x87/sse2, unicode/8-bit).
49 rtoy 1.10 - LISP::ENUMERATE-MATCHES had a keyword arg named
50     :VERIFY-EXISTANCE. This has been changed to :VERIFY-EXISTENCE.
51 rtoy 1.4
52 rtoy 1.1 * ANSI compliance fixes:
53 rtoy 1.5 - Fixes for signaling errors with READ-CHAR and READ-BYTE
54     o READ-CHAR signals errors if the stream is not a character
55     stream. This is a change from 20a and 20b, but matches
56     releases before 19f. (Almost. 19f allowed reading characters
57     from (unsigned-byte 8) streams. 19e did not.)
58     o READ-BYTE signals errors if the stream is not a binary
59     stream. This is also a change from 20a and 20b, but matches
60     releases before 19f. (Almost. 19f allowed reading bytes from
61     character streams. 19e did not.)
62     o But READ-CHAR and READ-BYTE will work if the stream class is
63     'binary-text-stream, an extension for bivalent streams in
64     CMUCL. READ-CHAR will use the specified external format for
65     such streams. READ-BYTE reads (unsigned-byte 8) elements from
66     such streams.
67 rtoy 1.15 - UNINTERN no longer removes the wrong symbol. UNINTERN would
68     remove the symbol when inherited from another package although
69     it should not.
70     - DEFSTRUCT allows multiple keyword constructors as required by
71     the spec..
72 rtoy 1.17 - In COMPILE-FILE, the :OUTPUT-FILE can also be a stream.
73 rtoy 1.18 - (OPEN f :DIRECTION :IO :IF-DOES-NOT-EXIST NIL) no longer signals
74     an error if f does not exist. It returns NIL now.
75 rtoy 1.21 - The second value returned by COMPLE-FILE is now T when there are
76     style warnings.
77 rtoy 1.15
78 rtoy 1.1 * Bugfixes:
79 rtoy 1.2 - The pairwise composition table is now correctly built.
80     Previously, it skipped over non-BMP codepoints. This also
81     requires a fix in %COMPOSE to handle non-BMP codepoints
82     correctly. The normalization test now passes.
83 rtoy 1.12 - On x86, REALPART and IMAGPART no longer incorrectly returns 0
84     instead of the correct part of a complex number in some
85     situations.
86 rtoy 1.9 - The command line parser now correctly handles the case where
87     "--" is the first command option.
88 rtoy 1.10 - build.sh was accidenally loading the site-init file, but it
89     shouldn't.
90     - On sparc, the vops to add a float to a complex were broken,
91     resulting in a complex number with the float as realpart and
92     garbage for the imaginary part. This is now fixed.
93     - XLIB::GET-BEST-AUTHORIZATION will now return authorization data
94     if the protocol is :local, if the xauth file contains just
95     "localhost/unix:0". Previously, no authorization data was
96     returned because GET-BEST-AUTHORIZATION was looking for the
97     hostname.
98     - FORMAT signals an warning if ~:; is used inside ~:[.
99 rtoy 1.11 - SET-SYSTEM-EXTERNAL-FORMAT was not actually setting the filename
100     encoding if given.
101 rtoy 1.14 - SUBSEQ with an end index less than the start index sometimes
102     crashes CMUCL. Now, signal an error if the boudns are not
103     valid.
104 rtoy 1.15 - Localization support was causing many calls to stat trying to
105     find non-existent translation files. This has been fixed so
106     that the results are cached. (If new translations are added,
107     the cache will need to be cleared or cmucl restarted.) This
108     change cuts building time by half on Solaris/sparc.
109     - On NetBSD, function-end breakpoints, especially for
110     tail-recursive functions, are working now.
111     - On NetBSD, display of FP numbers (sse2 and x87) during tracing
112     has been corrected. Previously, random values were displayed.
113     - Executables images can now be created on NetBSD again.
114 rtoy 1.16 - EXT::DESCRIBE-EXTERNAL-FORMAT was not exported.
115     - TRACE was erroneously allowing encapsulation when tracing local
116     flet/labels functions. This doesn't actually trace anything.
117     An error is now signaled in this case. This usually happens
118     because the function is in one of CMUCL's internal
119     implementation packages. If you know what you're doing, you can
120     use the trace option :encapsulate nil to trace them. Tracing
121     functions used by TRACE can cause bad things.
122 rtoy 1.19 - In some situations the compiler could not constant fold SQRT
123     calls because KERNEL:%SQRT was not defined on x86 with SSE2.
124 rtoy 1.21 Fix this by making sure KERNEL:%SQRT is defined.
125 rtoy 1.15
126 rtoy 1.1 * Trac Tickets:
127 rtoy 1.20 - #43: unread-char doesn't change file-position
128     Fixed.
129 rtoy 1.1
130     * Other changes:
132     * Improvements to the PCL implementation of CLOS:
134     * Changes to building procedure:
136     This release is not binary compatible with code compiled using CMUCL
137     20b; you will need to recompile FASL files.
139     See <URL:http://www.cons.org/cmucl/> for download information,
140     guidelines on reporting bugs, and mailing list details.
143     We hope you enjoy using this release of CMUCL!

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